[llvm] [DirectX][NFC] Leverage LLVM and DirectX intrinsic description in DXIL Op records (PR #83193)

[Xiang Li via llvm-commits]

================
@@ -18,7 +18,7 @@ entry:
 ; Function Attrs: noinline nounwind optnone
 define i32 @test_group_id(i32 %a) #0 {
 entry:
-; CHECK: call i32 @dx.op.groupId.i32(i32 94, i32 %{{.*}})
+; CHECK: call i32 @dx.op.unary.i32(i32 94, i32 %{{.*}})
----------------
python3kgae wrote:

It is not in any doc I guess :(

The code is in https://github.com/microsoft/DirectXShaderCompiler/blob/main/lib/DXIL/DxilOperations.cpp#L2693
ConstructOverloadName is used when create a DXIL op function.

https://github.com/llvm/llvm-project/pull/83193